package com.atguigu.gulimail.product.config;

import com.alibaba.fastjson.support.spring.GenericFastJsonRedisSerializer;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.cache.CacheProperties;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheConfiguration;
import org.springframework.data.redis.serializer.RedisSerializationContext;
import org.springframework.data.redis.serializer.StringRedisSerializer;

/**
 * @author Guo 2022/10/24 14:50:26
 */
@Configuration
@EnableCaching
@EnableConfigurationProperties(CacheProperties.class)
public class MyCacheConfig {

//    @Autowired
//    CacheProperties cacheProperties;

    /**
     * 用了此方法，配置文件中的东西失效 -- 默认的配置会走我们的配置文件，我们自己设置了就不走配置文件了。
     *
     * 1、原来和配置文件绑定的配置类：
     * @ConfigurationProperties(prefix = "spring.cache")
     * public class CacheProperties
     *
     * 2、要让他生效，加入注解@EnableConfigurationProperties(CacheProperties.class)
     * 2.1 可以装配使用 @Autowired CacheProperties cacheProperties
     * 2.2 可以放在redisCacheConfiguration方法的参数中，也会自动从容器中获取值。
     *
     * @return
     */
    @Bean
    RedisCacheConfiguration redisCacheConfiguration(CacheProperties cacheProperties) {

        RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig();
        config = config.serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(new StringRedisSerializer()));
        config = config.serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(new GenericFastJsonRedisSerializer()));


        CacheProperties.Redis redisProperties = cacheProperties.getRedis();
        // 将配置文件中的所有配置迁移过来，才能生效。
        if (redisProperties.getTimeToLive() != null) {
            config = config.entryTtl(redisProperties.getTimeToLive());
        }
        if (redisProperties.getKeyPrefix() != null) {
            config = config.prefixKeysWith(redisProperties.getKeyPrefix());
        }
        if (!redisProperties.isCacheNullValues()) {
            config = config.disableCachingNullValues();
        }
        if (!redisProperties.isUseKeyPrefix()) {
            config = config.disableKeyPrefix();
        }

        return config;
    }
}
